Arch brick



March 4 1924. 1,485,441

J. a. SULLIVAN ARCH bRIcK Filed Dec. 1. '1922 Patented Mar. 4, 1924.

J'E J. sULmvAm-or NASHVILLE, rnnnnssnn ARCH Application nie'a December To all whom it may concern:

Be it, own that I, JEREMIAH; J. SUL- LIVAN, acitizen of the United States, and residing at Nashville, in the county of Davidson and State of Tennessee, have invented a new and useful Improvement in Arch Bricks, of which the followingspecification is a full disclosure.

This invention relates generally to improvements in partition or arch walls especially applicable to locomotive boiler furnaces, and particularly to the form of brick employed in forming the wall and to the method of sustaining the brick.

It is a general practice iii the construction of arch Walls for locomotive boiler furnaces to form the walls of bricks disposed in rows, between and resting upon a plurality of longitudinally arranged and definitely spaced parallel inclined water circulating tubes, the bricks of each row being transverse to the tubes, and at their opposite ends grooved to engage about the tubes, between which they lie to prevent longitudinal movement of the bricks. The bricks of one row have a square edge or plane end abutment with the adjacent ends of the bricks of the second row and therefore only a limited or no transverse movement is permitted with respect to the tubes. Should the bricks warp or buckle under the actionof the heat they either distort the tubes or injure or crack the bricks.

It is therefore an object of the invention to rest the bricks tangentially upon the tubes, allowing the bricks to slide transversely upon the tubes, and secondly, to overlappingly endwisc engage the bricks of one row with those of an adjacent row with the overlapping ends of the bricks of a form to permit a hingelike action of the bucks one upon the other to avoid fracture of the bricks.

An object of the invention is therefore to provide a partition wall or arch formed of bricks which can .be hi'ngedly fitted toether in the various combinations required by the different fire box constructions, to form a continuous solid partition, or arch, the wall being supported in such manner as to be expansible without injury to the arch, arch supports, or sides of the .fire box.

Other ob'ects and certain advantages will be more ful y described in the description of BRICK.

1, 1922. Serial Nb. 604,120.

Figure 4 is a view similar to Fig. 3, showmg a construction wherein three arch tubes support the arch.

Figure 5 is a similar arch tube construction.

Figures 6 and 7- are respectively an edge view and a bottom plan of the key or wedge brick, constructed in accordance with this invention.

Figures 8 and 9 are res view and a bottom view showing a four eetively an edge plan 0 a body or intermediate brick having relatively parallel slanting ogee-shaped surfaces on two opposite parallel ed es.

Figures 10 an 11 are respectively an edge view and a bottom plan of an intermediate brick having convergently related upwardly facing ogee-shaped surfaces at two opposite parallel sides.

Figures 12 and 13 are respectively an edge view and a bottom plan of-another form of l intermediate brick having relatively opposite related downwardly convergent ogeeshaped surfaces.

Referring to Figure 1, which represents a portion of a locomotive boiler furnace, the numeral 1 designates the fire box of any preferred construction which is divided into upper and lower communicating chambers by a refractory arch or partition wall constructed in accordance with the present invention. The fire box as herein shown is composed of a door sheet 2, side sheets 3,

crown sheet 4, and tube sheet 5, only a portion of the tube sheet being shown and the tubes omitted. The arch tubes 6 connect the water spaces at relatively opposite sides of the fire box in the usual manner, and form supports for the arch com osed of my improved refractory end over apping bricks-of two classes, designed herein as intermediate be used, arch constructions vely by two, three and 1 Th intermediate bricks ti e supports or tubes in tangential there o, and as shown in Fig. 3, the liate or body br cks 10 rest tangenion and bridge the two arch tubes eld thereon from lateral displacev'edge orkey bricks 11 engaged pposite sides of the intermediate end and at their opposite ends ice-ts 3 oi? the furnace, The ngularly disposed with. rela- "in to the inte upwardly therefrom, ;to permit the unler the influence of fluctuating temperatures, to expand, the bricks 11 sliding along t is inner surfaces or" the furnace side trails or sheets to permit of such expansion, nout deformation of the side Walls. The ks 10 are of similar configuration and .iled description will therefore be directi e structure of a single brick. An view and a top plan ofene form of or intermediate brick are shown re- '.'.vel;l' in Figures 10 and'll.

. brick 1.0 is of rectangular configure a pair of'oppositely related ilel edges cut as at 12 to provide gee-configuration or 'ogee-en'ds, icing relatively convergent toce side of the brick. t This per- 7 brie s to be overlappin ly engaged '0 v ac to rock or swing one upon another. The bcr; has a socket 13 formed in its e "for the purpose of reducing .nd thickness, preventing fracture V v due to expansion and contraci of the same and providing gas mixing The Wedge or key brick 11, an view and elevation of WlllCll are rethe ogeehaped surface of an intermediate brick, and has itslower plane face 1'? convergenly related to the face 15. The outer or wait-engaging end of the brick at its edge is rounded and curved in v at right angles to each other, as at 18, tor engagci'nent ivith the side sheets 3, and

when the bricks are positioned to form the area circulating spaces a are provided between the side sheet and bricks, extending from center tocenter of adjacent bricks, as down in Figure 2. The rounded end 16 of brick 11 is compieinental to the upper portion of the ogee-shaped'surface of an intebrick, said ends being adapted ,c socket fit thereagainst, as shown i and 5.

rniediate bricks and are illbrick is SllOWll in Figures 12 and 13, which are respectively edge view and a bottom plan of the brick in which the ogeeshaped surfaces are downwardly convergent and downwardly faced, as at 20, the bottom of the brick being grooved as at 2i.

In Figures 8 and 9 are shown respectively an edge view and plan of a fourth form or" body brick 22, having the ogee-sha-ped surfaces parallel and in angular relation to the parallel plane faces of the brick and conipleinental to the angular disposition of the surfaces of the other forms of bricks,

All bricks may be manipulated, reversed, and fitted together in various combinations, conforniably to requirements, as shown in Figures 3, at, and 5.

lVith the plane lower surfaces of the bricks resting upon the tubes in tangential relation thereto, the wall as a whole is free to expand and contract, side sheet deformation being avoided, inasmuch as the key or Wedge bricks, during Wall expansion or contraction, slide upwardly or downwardly against said sheets 3. The relatively reversed relation of the ogee-shaped surfaces at the ends of the body or intermediate bricks 10 and 25, and the relative parallel ogee formation of the bricks 22, provides for the fitting together of the bricks in the various combinations required for arches,

sup orted respectively bygt vvo or more arch tub s. The curved end formation 1.8 of the bricks 11 provides sufficient space between the bricks and the side sheets 3, for circulation of heated air at those points.

Having described my invention, 1 claim:

1. In a tire box having arch tubes longitudinally arranged therein, a refractory arch comprising a plurality of bricks tan gentially supported and slidable upon said tubes, said arch composed of body bricks having at two opposite edges opposingly related parallel surfaces of ogee configuration adapting the bricks to be adjacently coinplementally overlappingly nested Within the edge dimensions of the bricks and non-interlockingly engaged, and key bricks disposed at opposite sides of said body bricks, said key bricks having rounded ends fitted against corresponding outer surfaces of said body bricks.

2. In a tire box having arch tubes longitudinally arranged therein, a refractory arch comprising a plurality of bricks bridging and resting upon said tubes in tangential relation thereto each brick having two opposite parallel edges of ogee configuration, the ogee shaped surfaces of all bricks coinpleinental, enabling the bricks'to be ovcrlappinglynested and n0n-intrlockingly engaged together in varying combinations, and key bricks disposed at opposite sides o1: said first-mentioned bricks, said hey bricks having complementalsurfaces fitted against the corresponding surfaces of saidfirst-mentioned bricks, the opposite ends of said key bricks engaging the side Walls of said fire box in angular relation thereto.

3. In combination with a fire box having longitudinally disposed parallel arch tubes therein, and a refractory arch supported upon said tubes, said arch formed of fire bricks slidably disposed upon said tubes in tangential relation thereto, each brick having opposite end surfaces of ogee configuration, adapting the bricks to be adjacently coinpleinentally oyerlappingly nested within the edge dimensions of the bricks and non-interha-kingly engaged, and key bricks having rounded opposite ends of relatively dii'lerent radius. the end of lar est radius engaged with a portion-of the ogee surfaces of said first-1nentioned bricks and the opposite ends in engagement with the side sheets of said fire box.

4. In combination with a fire box, a fire arch, comprising tubes having a'refractory arch supported thereon, said arch composed of intermediate bricks, bridging and resting upon said tubes in tangential relation thereto, said bricks having formed on their opposite parallel sides, surfaces of ogee configuration, said bricks mutually hingedly fitted together by overlapping corresponding ogee-shaped surfaces, and tapering key bricks having one end engaged with the upper portion of the outer ogee sur faces of the firstanentioned bricks, the opposite ends supported by the side sheets of said'fire box.

In witnesswhereof, I hereunto subscribe my name, as attested by the two subscribing witnesses.

JEREMIAH J. SULLIVAN. lVitnesses N. N. LAssrrEn, O. D. GLAUs. 

